diff options
| author |   Silvan Murer <silvan.murer@gmail.com> | 2018-05-21 14:21:28 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-05-22 18:24:48 +0100 |
| commit | 9ff1d5009fc4b47ac0e6d7818dac0158e1804c3e (patch) | |
| tree | 63cea06624a2346e69f43497a4eba1eb402acc15 /Documentation/devicetree/bindings/iio | |
| parent | iio: dac: fix missing of_match_table assignment in the LTC 2632 device (diff) | |
| download | linux-dev-9ff1d5009fc4b47ac0e6d7818dac0158e1804c3e.tar.xz linux-dev-9ff1d5009fc4b47ac0e6d7818dac0158e1804c3e.zip | |
iio: dac: Add support for external reference voltage through the regulator framework.
Signed-off-by: Silvan Murer <silvan.murer@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation/devicetree/bindings/iio')
| -rw-r--r-- | Documentation/devicetree/bindings/iio/dac/ltc2632.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt index eb911e5a8ab4..e0d5fea33031 100644 --- a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt +++ b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt @@ -12,12 +12,26 @@ Required properties: Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt apply. In particular, "reg" and "spi-max-frequency" properties must be given. +Optional properties: + - vref-supply: Phandle to the external reference voltage supply. This should + only be set if there is an external reference voltage connected to the VREF + pin. If the property is not set the internal reference is used. + Example: + vref: regulator-vref { + compatible = "regulator-fixed"; + regulator-name = "vref-ltc2632"; + regulator-min-microvolt = <1250000>; + regulator-max-microvolt = <1250000>; + regulator-always-on; + }; + spi_master { dac: ltc2632@0 { compatible = "lltc,ltc2632-l12"; reg = <0>; /* CS0 */ spi-max-frequency = <1000000>; + vref-supply = <&vref>; /* optional */ }; }; |